Ladies and gentleman the Real World®©™ i complex... Cam? How much their dinamic range can master direct sunlight, water/snow/something white and big, glass refl

Ladies and gentleman the Real World®©™ i complex... Cam? How much their dinamic range can master direct sunlight, water/snow/something white and big, glass reflections? How about a flying large leaf passing in front of the stereocam? Ultrasound? How do they perform with heavy rain mitigation and environment high background noise? Radar? Same for heavy rain, very little reflective materials etc. Long story short NO SENSOR works well enough in all possible circumstances. That's why the last decision must be human, the human awareness of physical world surrounding can hopefully correct perception errors of sensors and human sense themselves, that's is. So far IMVHO that's the best "tool" we can choose. Normally cars should not run so fast in so tight environment where quickness can't be enough and in general, IME no sensor is really quicker in practice. Doing more? Well than we need to change roads, not cars, and that's HYPER expensive... I mean for instance adding under lanes a small metallic band radars can detect to give something surely and precisely visible by sensors, using some reflective powder in temporary lanes to allow seen them and recognize the different response as "that's the right one, ignore the other", small plastic poles with reflective material aside at regular distance, for the least expensive part. For circulation the sole reliable and potentially affordable is vehicle to vehicle communications meaning every running vehicle emit a beacon any others can detect, parked vehicle can wake up and respond to the beacon as well. That's far from perfect since only new vehicles would have it, but that's also the best solution we have. The beacon beam the size and speed of the vehicle, trajectory analysis is possible. More precise and (far, but not really so far, +300€ per vehicle I think) more expensive adding a small optical gyro to have also the right real direction to compute more precise trajectory can be useful and in that sense FEW beacons on the road itself, activated by passing vehicles can tell the right GPS position to have both more precise navigation allowing an easy local direction (from the gyro) + distance + map to know where we are around 30-50cm precision... All systems are complex but scalable and not so expensive on scale to be doable, the point is if they are worth it or not if we decide to go to a "flying" future for all light vehicles...